I'm confused as to whether an undirected graph can be considered connected? For example: A---B---C. Say that we have three vertices, A, B and C. If the graph is undirected like the one …

Jul 4, 2016 · Yes Dijkstra work for both directed & undirected graph but all edge weight should be +ve . Because if any weight is -ve, then it may fail to give the correct answer. It works on …

Jan 14, 2013 · @VinothKumar The Wikipedia page describes trees in the context of graph theory, where a tree is indeed an special case of an undirected graph. In the context of programming …

Apr 8, 2019 · For an undirected graph, we simply say that it is connected when there is a path between any two vertices. There are then (at least) two ways to generalize this notion to …

In undirected graph 2-3 means the edge has no direction, i.e. 2-3 means you can go both from 2 to 3 and 3 to 2. Note that in the representation of your graph, if you are using an adjacency …

Feb 8, 2009 · An undirected graph is acyclic (i.e., a forest) if a DFS yields no back edges. Since back edges are those edges (u, v) connecting a vertex u to an ancestor v in a depth-first tree, …

Using them in an undirected fashion involves trade offs (space verses speed). this course material goes into more detail on the adjacency list style and provides some thoughts on the possible …

Nov 5, 2012 · For my application I need to represent simultaneously (on the same graph) two relations: one is simmetric, the other is not. Targets: Ideally the two relation should result in …

I tried the following : 1) DFS, keeping track of level of each vertex in my DFS tree 2) Each time a back edge (x,y) is seen, I calculate cycle length = level[x] - level[y] + 1, and save it if it is

Jul 22, 2018 · For undirected graphs, the concept just doesn’t apply — there’s no direction, so no “ordering” between nodes. But, you still can apply the idea of Topological Sort, to detect a …